Phoenix Contact Safety Relay 2981813

Phoenix Contact PSR-SPP-24DC/ESD/4X1/30 Sicherheitsrelais (Item No.: 2981813)

Marke: Phoenix Contact

1. Aufschlüsselung des Modellcodes

`PSR-SPP-24DC/ESD/4X1/30`

1. PSR: Safety relay of PSRclassic series
2. SPP: Push-in spring cage terminals (tool-free pluggable wiring)
3. 24Gleichstrom: Control coil rated voltage DC24V
4. ESD: Electrical Switch-off Delay (dropout delay function)
5. 4X1: 4 safety normally-open contacts (2 augenblicklich, 2 delayed)
6. 30: Adjustable delay range: 0.1s ~ 30s
7. Core Safety Ratings & Compliance-Standards

Forcibly guided mechanical contacts: IEC/EN 61810-3

Machinery safety: Kat.4 / PL e (IN ISO 13849-1)

Funktionale Sicherheit: SIL 3 / SILCL3 (IEC 62061 / IEC 61508)

Applicable safety devices: Emergency stop pushbuttons, safety door interlock switches, safety light curtains

3. Key Electrical Specifications

3.1 Control Input (Spule)

Nennspannung: DC24V, permissible operating range 0.85～1.1Un

Operating current: 75mA

Response actuation time: 150MS

Reset recovery time: 330MS

3.2 Ausgangskontakte (4 N/O Normally Open)

Instantaneous contacts: 2 Stk, release time ≈20ms

Delayed contacts: 2 Stk, adjustable delay: 0.1～30 seconds

Kontaktmaterial: AgSnO₂

Continuous rated current: 6A / 250V AC/DC

Max. power for resistive loads: 1500VA (AC250V), 144W (DC24V)

Minimum switching capacity: 0.4W, minimum carry current 25mA

Mechanical service life: 10 million switching cycles

3.3 Verdrahtung & Montage

Terminals: Pluggable push-in spring cage terminals (SPP)

Montage: Standardmäßige 35-mm-DIN-Schiene

Schutzklasse: IP20 (for cabinet internal installation only)

Gewicht: Ca. 0.24kg

4. Funktionsmerkmale
5. 2-channel monitoring: Supports single/dual-channel safety circuit connection, compatible with dual-channel E-stop and safety door interlocks
6. Two reset modes: Automatischer Reset / manually monitored reset (with feedback loop)
7. Dropout delayed output: Delayed power cut-off for drives after equipment shutdown, ideal for scenarios requiring inertia coast-down of motors and slow stop of conveyors
8. Tamper-proof design: Sealable delay adjustment knob to prevent unauthorized on-site modification of delay settings
9. Built-in self-diagnosis: Integrated diagnostic LEDs to rapidly identify power supply faults, safety circuit open-circuits and reset failures
10. Typische Anwendungsszenarien

E-stop safety circuits for machine tools, injection molding machines and stamping equipment

Safety guard door monitoring for automated production lines

Signal evaluation for safety light curtains in robot workcells

Delayed power disconnection for conveyor and roller motors with inertia stop

6. Cross-Series Alternative Comparison

7. Beschaffung & Stock Information

Member price on official domestic store: ca. CNY 3,475; standard minimum order quantity 1 piece per carton; industrial automation spare parts kept in regular stock.

Full Application Scenarios of PSR-SPP-24DC/ESD/4X1/30 (Item No.2981813)

Core advantages of this model: 2-channel safety monitoring + 2 instantaneous safety contacts + 2 dropout delay contacts (0.1~30s) + Cat.4/PL e/SIL3. It is specially designed for safety conditions where equipment carries large rotational inertia and cannot be fully powered off instantly. All scenarios support monitoring of three categories of safety components: Not-Aus-Taster, safety door interlocks and safety light curtains.

1. Basic Safety Signal Monitoring (Universal for All Automated Equipment)

1.1 Dual-channel Emergency Stop Circuit Monitoring

Dual-channel E-stop detection for machine tools, standalone production line units, robots and packaging machinery

Supports manually monitored reset / Automatischer Reset, with detection of short-circuits and open-circuit faults in E-stop wiring

Instantaneous contacts cut off main drives immediately; delayed contacts control slow stop of auxiliary loads including fans, conveyors and lubrication systems

1.2 Equipment Safety Guard Door Monitoring

Dual-channel monitoring of safety door interlocks for stamping machines, injection molders, Bearbeitungszentren, robot enclosures and automated modules

Main spindle/servo power is instantly cut off when the door opens; cooling, chip removal and conveyor systems keep running with delay until full inertia stop before disconnection

Detects cross-wire short-circuits in door switch wiring, fully compliant with machinery safety standards

1.3 Safety Light Curtain Signal Evaluation

Safety circuits for light curtains on stamping, bending, robotic loading/unloading and packaging lines

Main motor cuts off instantly upon curtain obstruction; delayed contacts operate discharge roller conveyors to clear residual materials

Built-in cross-circuit fault diagnosis, meeting the highest PL e safety rating requirements

2. Core Featured Scenarios (Relying on ESD Dropout Delay Function, Exclusive Strength of This Model)

2.1 Conveying & Logistikausrüstung (Belt Conveyors, Roller Lines, Stacker Cranes)

Bandförderer, roller sorting lines, automated warehouse roller conveyors, packaging transport lines

Operating logic: After E-stop or door opening, main drive cuts off instantly; rollers remain running for an adjustable delay of 0.5~10s to clear materials on belts, avoiding material extrusion, machine jamming and belt tearing

Widely applied in food packaging, warehousing logistics and lithium battery assembly lines

2.2 Rotational Inertia Load Equipment (Fans, Centrifugal Machines, Mixer, Extruder Screws)

Injection extruders, pelletizing screws, high-speed agitators, centrifugal dehydrators, high-power cooling fans, Luftkompressoren

Operating logic: Main spindles carry massive inertia; instant power-off risks screw fracture and impeller damage. Main power is cut off instantly, while lubrication and cooling fans keep operating for 3~30s until rotational speed drops to zero before auxiliary circuits are disconnected

Standard configuration for plastic extrusion, chemical mixing, lithium coating and rubber pelletizing industries

2.3 Web Winding, Slitting & Druckausrüstung

Film slitters, paper printing machines, non-woven winders, lithium battery electrode slitters

After safety trigger, winding/unwinding servos cut off instantly; tension rollers keep running for 2~8s to prevent sudden web breakage and flying material hazards to operators

2.4 Werkzeugmaschinen & Metal Processing Equipment

CNC machining centers, CNC lathes, punch presses, Biegemaschinen, Schleifmaschinen, Laserschneidmaschinen:

1. Instant cut-off of spindle servos when safety door opens or E-stop is activated
2. Delayed contacts continuously run cutting fluid pumps, cooling fans and chip conveyors; all power disconnected upon delay expiry
3. Prevents damage to cutting tools and spindle bearings caused by rapid shutdown of hot spindles without cooling

2.5 Robot Workcells & Automated Assembly Units

6-axis robots, gantry manipulators, loading/unloading modules, welding stations:

Robot servos cut off instantly upon trigger from enclosure safety doors or area light curtains

Delayed control for slow stop of conveyors, fixture air blow dust removal and cooling fans

Compliant with safety specifications for auto parts and 3C electronics assembly

2.6 Essen, Pharmazeutisch & Verpackungsausrüstung

Filling machines, Siegelmaschinen, horizontal form fill seal packaging machines, pharmaceutical sorting equipment:

Main transmission cuts off instantly when safety guards are opened

Discharge conveyors run delayed to clear food/medicine bottles, avoiding mold jamming and cross-contamination from accumulated materials

3. Summary of Complete Sets of Applications by Industry
4. Werkzeugmaschinenindustrie: CNC equipment, punch presses, Biegemaschinen, Laserschneider, Spritzgießmaschinen
5. Logistik & Warehousing Industry: Belt conveying, roller sorting, automated warehouse stacker cranes
6. Gummi, Plastik & Chemische Industrie: Extrusion pelletizing, high-speed mixing, film slitting machines
7. Robotik & Automation: Schweißen, loading/unloading, enclosure safety protection for 3C assembly robots
8. Lithium New Energy Industry: Safety monitoring for electrode slitting, coating and cell assembly lines
9. Essen & Pharmazeutische Industrie: Safety door + light curtain monitoring for filling, packaging and sorting equipment
10. General Fan & Air Compressor Station: Safety circuits for maintenance access doors of high-power fans and water chillers
11. Model Selection Guidance (Why Choose This Model Over Standard Non-Delayed Safety Relays)
12. Standard safety relays cut off all contacts simultaneously; inertia loads easily suffer equipment damage and material jamming
13. This model separates instantaneous safety circuits and delayed auxiliary circuits, balancing operator personal safety and equipment protection
14. Push-in spring cage terminals (SPP) enable tool-free wiring and higher mass assembly efficiency in control cabinets
15. Sealable delay adjustment knob prevents equipment faults caused by unauthorized on-site personnel shortening delay time